Verifier



Nov. 30 1926.

p. uc'.' DAUBMEYER VERIFIER Filed May 11.

- 1925 4 Sheets-Sheet -1 l LE .il um.

A TTORNEY5` Nav.' 30,1926. 1,608,493

D. C. DAUBMEYER VERIFIER Filed May 11. 192s 4 sheets-sheet Nav. 30,1926. 1,608,493

' D. C. DAUBMEYER 4- VERIFIER Filed May l1, 1925 4 Sheets-Sheet 5 l,4 TToRNEY Patente/d Nov. 30,-411926. 'e

UNITEDl STATES' PATENT] OFFICE.

DEWEY DUBHEYEB, OF DETROIT, MICHIGAN 'VEBIFIEIR Application led Hay 1,1, 1925. Serial No. 29,551.

This invention relates tol verifiers for tabulation cards such as shown in United States Letters Patent No. 1,266,768 and more, particularly to improvements in devices of this character/wherein the detection of errors may be facilitated by means of an easily noticeable signal. The invention finds particular utility in connection with the above type of machines through i has been given theretol by a subsequent action by the operator.

The invention has also as an object to simplify, render more eicient, and improve Y generally, devices of this .character, andl the above as well as various other objects, ad-

vantages, and novel details of construction, will be made more apparent as' this description proceeds, especially when considered in connection with the accompanying' drawings, wherein- Flguren'l'is .a plan v1ew of a` verifier wlth my invention incorporated therein,

Figure 2 is a side elevation, partly in section, of the vstructure shown in Figure 1,

Figure 3 is a-sectional view taken substantially on the plane indicated byline 3-'-3 in Figure 1,

Figure 4 is a fragmentary view partly in section and partly in sideelevation, takensubstantially on theA plane vvindicated by line Figure 5 is a fragmentary top plan` view showing certain details of construction y Figure 6- is averticall transverse sectional view taken substantially on the plane indicated by the line 6-6 in Figure 3,

Figure 7 is a perspective view of the stand or support for the verifier, f Figure 8 1s a rear elevation of .this support with the .Cback wall vof the housing portion lthereof removed, and l c Figure 9 is a diagrammatic view illustrativeofthe circuits involved in my invention.

Referring ings wherein like reference characters indicate like parts, it will be noted that in Figunes 1 and 2 wherein the vverifier alone 1s now particularly to the draw' illustrated, that this machine consists of a base 10 provided on'its upper face with a guide Way 11, the sides of which are defined by upstanding ribs or guideledges 12. This guide way lprovides for the passing or feeding throug the machine 'of perforated tabulation cards, one of which 1s `illustrated at 13, the cards being fed longitudinally through the machine by means of a carriage which consists essentially of a rack bar 14 travelling in asuitable t-rackway at one side of ,the machine, and a pair of s aced arms 15 and,16 extending aterally t erefrom and to a point within the trackway 11 and adapted to engage respectively the left and right hand ends of the card 13. At the outset the card carriageis positioned at the extreme left-hand end of the machine y wherein the card is inserted between arms 15 and 16'and the carriage together with the bring theA first left-hand row of perforations under the plungers of the verifying mechanism adapted to cooperate therewith. The card carriage, during the operation `of the machine, is either held or advanced step card moved toward the right suicient to4 by step, towards the left by a suitable esl caperhent mechanism, yet to be referred to,

or is released and is permitted to move to 90 its position at the extreme left-hand lend lof the machine by a suitable carriage release mechanism yet to be referred to.

The rack bar 14 of the card-carriage is provided at. its lower edge with a'plurality of teeth 17 adapted to be vengaged by the pinion 18 of a carriage advancing mechanism, which pinion is rotatably urged in one direction by means of a spring 19. vThe escapement mechanism consists in part of pawls 20 and 21 alternately engageable with a rack of teeth 22 `on bar 14; In practice the 'escapement mechanism is operated in the customary manner during the normal l operation-'of the machine to permit a step bysstep movement of the -card carriage to-- ward the left, `the escapement i mi 'whileescapelent pawl '20 is in Aengagement "1 fwith teeth 22 and escapement pawl 21 is out t of engagement.

being operated either by the bank of main keys or by the spacing key while the escapement mechanism is completely released by a carriage release key to permit the card carriage to return to its extreme left-hand ition.

Suitably supported on the base.10 of the machine is a pair of spaced plates 23 adapt- "ed to support a bank of keys, each key comprising a vertical `stem 24 and a key head 25. The bank of keys 25 are suitably numbered. The stem 24 of each key enga es one of a series of ke bars 26 horizonta ly arranged and exten ing longitudinally of the machine.

vArranged transversal of the .base and spaced from the bank o keys 25 is a superstructure including a pair of upright sup porting members 26, and a pair ,of transversel arranged spaced guide bars 27 rigidly xed to the uprights26. Supported by the guide bars 27 is a row of plun ers 28, and arranged intermediate the gui e bars 27 and surrounding each lplunger is a spring 29 which tends to norma y urge said plungers upwardly with the upper end of each plunger 28 engaging a correspondin key bar 26 and with its lower end arrange substantially flush with the `under face of the lower guide bar 27.

Mounted preferablyupon plate 30 which comprises a part of the aforesaid superstructure is a block or casing 31 within which is mounted a second series of vertical plungers 32, the lower ends of which are en ageable `with the rear ends of key bars 26. lungers 32 are normally urged downwardly by coil springs 33. For reasons which Will be made more apparent hereinafter springs 33 are relatively stronger than springs 29.

Extending transversely. under the series of lkey bars 26 is an escapement rock -bar 34 which is suitably connected by arms 35 to a rock' shaft 36. A spacing key 37 is likewise connected'to rock shaft 36 by meansy including a. link 38 having a loose connection 39 with key 37 and a lever 4() connected to the link, to rock shaft 36, and rto escapement pawl 21 as at 41. rEscapement pawl 20 is connected to rock shaft 36 by lever 42.

.Suitable means such as springs are providedfor maintaining the parts substan-A Atially in the position shown in Figure 4, it

being understood that only those parts of the escapement mechanism which are essential .to an understanding of the operation of -this invention have been described and illusf trated. It will be seen that esca ment rock -bar- 34 is normally just below ey bars 26 In o ration when one of the bank ofkeys is epressed the. corresponding'A key bar 26 is depressed thereby 'rotating rock shaft 36 by the engagement ofi key .bar 26 with esleased the parts will be returned' to their l normal position by thevarious springs `associated therewith and pawl 2() will be again moved into engagement with teeth 22 while paw1y21 is I\ raised, whereupon lthe card carriage will liave moved to the left one space. The same movement of the card carriage rc'- sults from a depression of thc spacing key 37 which acts on the escapement mechanism through link 38.

Also associated with the bank of keys is a carria e release key 44 which includes as a part t ereof a bell crank lever 45 pivoted to a. support secured to the key bank frame as at 46. The lower endof the lever 45 engages a carriage release mechanism indicated generally by the reference character 47. In practice a depression of key 44 rocks lever 45 'to actuate carriage release mechanism 47 -f whereby escapement pawls 20 and 21 are released to permit a return of the card carriage to its extreme left-hand position.

In the operation of the machine as described thus far lthe depression of any key 25 has caused a depression of key bar 26,l which pivoting upon the end of'corresponding plunger 32 and functioning as a lever of the second class, has caused a depression of the corresponding plunger 28. The partsv function in this manner when a key is depressed which corresponds tothe Aperforation previously formed lin the card 13, or in p other words, when a perforation is arranged under thedepressed plunger 28. Consequently the depressed plunger 28 enters the fpreviously formed foration in card 13 ,and descends theret rough, whereupon the\ escapement mechanism is 5 actuated by the depressed key bar 26, and upon the release of the depressed key the card carriage moves one space. If, however, there is an error either in pressing a proper key 25 or in the location of perforation in the card 13 the plunger thus depressed fails to register with the perforation in the card and the im rforate portion of the card encountered y the plunger resists depression of the lutter and the said plun r then becomes a fulcrum for the actuated ey bar upon which the latter now functioning as a lever of the first class, pivots to raise a-corresponding plunger 32 in opposition to restraining spring 33. Because of the shortening of the leverage occasioned by this change of the fulcrum, the rock bar w Yi,eos,4.aa

- fier with which my invention is adapted to be associated. No claimis made to the hereinbefore described structure except in so far as its operation affects the operation of my invention. e l

In the operation of the verifier as just -pointed out, it is necessary for the operator to detect the errors by observing the failure of the card carria e to advance, which occurs either when an incorrect key is depressed or when an incorrect perforation has been made in the card. The rapidity with which these machines are operated makes it ex' tremely difficult for the operator to observe even when such error has been detected by the verifier. Furthermore, there are various classes of errors which have become common in record cards of 'this' nature which are diicult, if not impossible, of detection by by the verifier construction herein described. Notable among these is that error which consists intwov perforations in a single vcrtical column, one of which may however be correct, this error being particularly troublesome when the incorrect error is for instance, further toward the bottom of the card and represents a value higher than the correct one. Another type of error which has been diiiicult of detection in the heretofore known type of verifier has been the errors occurring in the last column, the diliiculty resulting from the failure of the carriage to advance even when the correct key has been depressed.

My invention therefore is designed with particular reference to improving the etliciency of the verifier so that it will positively and accurately detect all types of errors and will furthermore cause the display of a signal which willremain on even though the the operation ofthe machine is continued,

lit being possible to reset the signal only upon a resettin of theJ machine pursuant to' locating positively the error.

In carrying out my invention I associate with the row of plungers 28 a series of contact switches 52 equal in number to the number of data figures contained in a vertical row on the card, and consequently equal to the number of plungers 28. This series of contacts is supported u on a frame 48 which is in the form of a ri id plate suitably con- -nected to theunder side of the-base ofthe machine, as for instance by means of bolts 49. Spaced from the base lplate 48 by means of a spacing block 50 and an insulatingystrip 51 is the series of switches 52 comprising -a contact memberin'the. form of a lcomb one ,e el ortion 53'thereof' beingl continuous an vserving asthesecuring portion for. the comb, while the rojecting portion consistsof a plurality o projecting iin' ,gers 54 each carrying a contact 55 rendered n. adjustable by lock nuts M56. Spacedn from i ,'contactniember 52 and insulated therefromv is a rigid contact plate 57 which carries plurality of contacts 58 equal in number to l contacts and adapted for engagement therewith. The free end of each finger 54v 'of contact comb 52 is provided with an up wardly projecting stud or pin 59 whicliextends upwardly through-an aligned opening 60 in the base of the machine. Arran ed in each opening 60 and engaging the len of the corresponding pin 59 1s a ball 61. .The lingers of contact comb 52 are inherently resilient and tend normally to ur e ins 59 and balls 61 u wardly-.whereby t e all 61 projects slight y above the top surface of ase 10 andenfrages the lower ends of plungers 28. parts, and as shown the contacts 55 and 5 are therefore normally engaging one another.

se This is thenormalposition of the When a card 13 is inserted into the machine it is forced between the'lower ends of plungers 28 and balls 61, the thickness ofthe card being suiiicient to' depress balls 61 iiush with the upper surface of base 10, this downward displacement of balls 61 and ins 59, moving the teeth or fingers 54 of condi) 52 downwardly so as to break contacts 55-58. VAll of the contacts are broken save those corresponding to the perforations in the card. The registration of a perforation in card 13 with one vof the balls 61 permits this ball to project throuo'h the perforation, whereupon the ycorresponding pair of contacts55-58are permitted to engage so that a circuit, later to be described, is closed through this pair of contacts.

By referring now more particularly to Figures 3, 4, and 5, a air of switches which cooperate with the a ove describcd'switches 4 will be explained. Secured to the base vof the machine immediately adjacent the bank of keys is a switch box 62. Arranged within ,this box is a secondary or delayed action switch 63 which consists of .a pair of contact members 64 and 65 mounted in spaced parallel relation and suitably. insulated and spaced from one another by insulating blocks 466. This secondary or delayed action switch is' adapted to be operated during thelatter part .of the depression of any oneof the bank of keys 25 or upon ya depression of spacing key 37. For this purpose I pivotally mount on the switch box 62 `'as at 67 a lever 68 having a laterally projecting insulated arm 69 ion which extends over the free end. of upper lil) pin 70 extending laterally from the point off connection of link 38 and arm 40.. Lever 68 rests on top of the-pin 70and` inasmuch as vpin 70 is reciprocatedvertically duringy an operation of the escapement mechanism .effected either during the latteijpart of the depression of one of the bankof keys 25 or upon operation of'key 37 ,lever 168 will be opening of switch be closed. This movement of switch 63 will,

however, be an idle movement as the circuit will be incomplete owing to the previous 52. However, if a plunger 28 is de ressed which does not correspond to the per oration in card A13 the (pair of contacts -58 of switch 52 close by reason of the perforations will notbe opened, and consequently during a continued depression ofthe aforesaid key, delayed action switch 63 will be closed and a circuit completed thereb -f It sliould be understood that while the escapement mechanism completes a full operationonly when a key, corresponding to an accurate perforation, isl depressed that a sufficient rockingof arm 40`and reciprocation of pin occurs each time to actuate arm 68.\ This movement of arm 40 independent of pawl 2O is possiblelbecause of the oose connection between these parts which. consistsof apin .42* carried by arm 42 and the relatively large cooperating aperture 20* in pawl'-20. Furthermore in-the following description and in the claims the escapement awls 20 and -21, rock bari 34, the spacing ey 37, and the'cooperating connecting levers and shafts'are all referred to as the carriage or card .advancing means. This mechanism has been described a'nd is referred to genv erally as it is of 'standard constructionand forms no of this invention. Also contained within Aswitch box 62 `ris a switch 71 which consists essentially of ay spring contact member 72 adapted to engage ntacts 73, these' parts being suitably suphernt y pported and insulated from one another and in switch box 62'by blocks of insulation.

Rigidly secured to spring contact member 7 2 is an arm 74 which extends laterally therefrom and throu h an aperture 75 in the This arm 74 extends into the path of the downwardly extending leg 76 of ell crank lever 45 offcarriage release key v44. S ring contact member 72 which, is inresilient normally. bears against contact closed.. However, upon a depressionrof carringe release lkey 44, which as heretofore described operates a suitable carriage release mechanism 47, bell crank lever-45 is rocked, thus moving the leg 76 thereof to theleft or, in other words,'

through this registering per oration :light bulb 82. This 73 so that this switch is normally i thus opening switch 71.

By reference to Figures 7 and 8 it will be noted that I have rovided a stand or support for the veri er machine proper, which support constitutes also a housing for that portion of the mechanism 'not carried directly by the verifier.

As will be noted in Fi re 7 the stand 77 is formed with an upwar ly and rearwardly inclined supporting platform or base 78 arranged referably with an u wardly projectingv orward ledge 79. T adapted to rest upon this supporting platform 78 and by reason of its inclination will be pro erly inclined for convenient operation. an enlarged, ousing 80, the rear side of which may be opened and closed by a suitable cover whereb access to the interior thereof may be ha The upper wall of thehousingl is rferably cut away andthe aperture us ormed is closed by a sheet of transparent material 81 such as glass or the like, preferably distinctively colored.f Arranged within the housing adjacent this a erture, is an electric le ectric light bulb is capable of receiving volts whereby the device may be connected =to an ordinary lighting circuit. Alsor'nounted within the housing isia relay 83, a pair of resistance elements .84 and 85, and a four-way plug 86 which extends through the casing at one end thereof and is adapted to been aged 4by a four-way prong plug 87, in whic the suitable source of power, preferably the ordinary electric light house circuit.

Referring to Figure 9, wherein the electrical circuits involved in the invention are diagrammatically illustrated, the operation of the device willbe described.

In a normal operation of the verifier the e verifier is card 13 is fed longitudinally of the machine and the vertical rows of dat-a',y selectedl items of which are punched, are successively brought in alignment with plungers 28 and consequently balls 61. 'Assume that in the row .now in alignmentwith plungers 28 a properly arranged perforation has permitted a` ball 61 to project upwardly therethrough g a distance sufficient to close the corresponding contacts 55.-58 of switch 52. The circuit, however, is notl com' lete as delayed action switch 63, also inclu edin the switch, has not as yet been closed. Upon a depresplunger 28 will be depressed and because of itsl'evistration' with the aperture in card 13 w1 move the corresponding spring finger 54 downwardly, thereby separating the pair of contacts 55-58 of t-he contact switch 52. During the continued movement of this key contact 63 is subsequently closed, this latter switch closing, however, only after switch 52 has been opened. Hence t-he circuit was never completed but the operation of the key 25 h as actuated the escapement mechanism and the card carriage has advanced one step, thereby positioning the next vertical row in alignment with plungers 28.

Assume that now either an incorrect key 25 is depressed or else that an incorrect peroration appears in the column in alignment with plungers 28. One of the switches 52 will consequent-l be closed and upon a depression of a ey 25 the corresponding plunger 28 will en age an imperforate or-' tion of the card an the key bar 26 will ivot thence through wire 101 to thence through wire' 95 to the source of onv this plunger and raise plunger 32. uring the continued movement of the key it has, however, closed contact switch 63 and inasmuch as switch 52 in the circuit has not been opened, the following circuit is made active. From the positive side of the source of power 89 through. wire 90 to the ccil 91 of the relay, through the coil and through wire 92, Aacross closed switch 52, through wire 93, across switch 63, through wire 94 and resistance element 84, and thence through wire 95 back to the source of power. This causes an energization of coil 91 of relay 83, whereupon armature 96 is attracted and caused to engage contact l97l carried by the goose-neck frame 98 of the relay.

The relay 83 is designed to control a circuit including electric light bulb 82, this circuit excluding the two resistant elements 84 and 85,so that a 110 volt bulb may be employed. Therefore upon the energization of coil 91 of relay 83 the following circuit is excited: from the source ofA power 89 ythrough wire 90, through electric 1i ht-/bulb 82, through wire 99 to point 100,'t ence through armature 96, contact 97, relay frame 98, int 102, `and wer.. Consequentl electric light bulb 82 is illuminated, there y producing a visible signal indicating that an error has'been detected by the machine. v

The relay is maintained energized and this circuit closed irrespective of the openin of switch63 by a relapse ofthe ldepressedglrey b the following circuit which is closed upon t e initial. energization'ofethe relay: from the source of power through wire 90, through coil 91 of the relay, through wire 92 to point 103,- thence through wire 104 to normally closed switch 71, then throughwire 105, re-

dbpress ball 61, and through pin 59 will depression of key Y all'all sistance 85, through armature 96, contact 97, relay frame 98, wire 101, and wire 95 back tothe source of power. h

As was heretofore pointed out; switch 71,

which is normally closed, is adapted to be opened by depression of carriage release key 44. Conse nent-ly when an error has been detected an indicated bythe illumination of electric light bulb 82, this signal will b e maintaine this switch may only be opened by a depression of the carriage release ke ,Cwhereupon the carriage will-be moved bac to its ointv of rest at the left-hand end of the mac ine.

Simultaneously the last mentioned circuit designed to maintain the coil 91 of the relay excited is broken. Consequently armature 96 moves away from engagement with contact 97 whereby the circuit to electric light bulb 82 is broken, and the circuits are in'their H5 initial or de-energized state.

In view of the foregoing it will be readily apparent'that errors of any character what'`V soever will be readily detected. One, of the switches 52 will be closed for each parlors U ition in a vertical column and if these 'perforations are inaccurately placed or if there be more than the correct number of perforations, the switches 52 thus closed will not be opened by depression of the selected keys 25.

Consequently during the subsequent operation the depression of any of the keys -will cause the closing of switch 63 and an energization of the relay circuit. The rela thereupon closes an 'inde endent circuit w ich in- 10 cludes the signal igl and also closes, a shunt circuit including the coil of the rela for maintaining this relay energized until this latter circuit is deliberately broken by a subsequent operation. Hence the` 'opera 105 tor must take co izance of the error as indicated by the signal light, which will remain illuminated despite-an effort to continue the operation ofthe verifi Obviously the device4 will f the signal will be illuminated even upon an erroneous depression of spacing key 37 ,f because in such an event one of the switches 52` will be closed and `will not be opened uponea 37, but the movement of this key will reciprocate link 38 thereby afituating arm 68-to close switch 63,' whereupon the circuits will be excited in thevmanner hereinbefore pointed out.

A notabletature of the herein ment co ists in the structural design t reofiwhich enables the4 device to be associated'witli a standard yerifier of the I characterre'fen'ed to without material al'- teration thereto. Infact the design of the 125 parts of this invention are such -thatthe parts carried directly -by the' verifier maybe attached thereto by utilizing spaces and bolt apertures already on the machine. Furthermore,the construction and arrangement of *13 until switch 71 is opened and 75 ction and 119 deseribed 120l this invention is such that it does not alter or aiiect the operation of the verifier as originally designed but, on the contrary, eiciently coo rates, therewith 'to produce an added eiliciency of operation and more potent results.

The combined support and housing herein shown is designed to provide a convenient support and platform for the machine as well as a casing for enclosing the signal light, relay, resistance elements and thewiring therefor. However, ments have been shownas arranged -within the' housing 80 it will be readily' understood that the invention should in no wise be limited by -this disclosure, as these parts may be all contained in any sort-of housing associated with a support for the machine, or in a disassociated relation.

Therefore, while one illustrative embodiment of the invention has been described and shown in some detail the invention should not beklimited by lthe disclosure .as reservasheet, of

ly operablev for ener tion is made' to make such changes in the construction, arrangement and association of parts, as may come within the purview of the accompanying claims. s

What I claim as my invention is:

1. In an error lindicator for indicating errors in a perforated .'Sheet, a signal circuit, and means' normally restrained by the imperforate portion of the sheet and operable by the resence of perforations in said sheet for initiating the completion of said circuit.

2. In an error indicator, the combination with means -for advancin a perforated sheet, of a signal circuit, an means normally restrained by the imperforate portion of t e sheet and operable by the presence of a perforation in said sheet, and by said ad- `vancing means, `for energizing said circuit.

3. In an error indicator for indicating errors in a perforated sheet, a signal, means normallyrestrained by the imperforate portion of the sheet and operable by the presence of rforations in said sheet for initiating t e operation of said signal, and means controlled by the further operatonof the perforation/detector and subsequently operated vfor completing the operationv of said signal.v

4.' In an error indicator, with meansfor advancing a perforat a signal circuit, and means normall vrestrained by the imperforate portion of the combination 't e sheet and actuated by the presence of rforations in the sheet and said advance ing means acting in gizing said circuit. 5. In an error indicator, the

combination' with ineens-4 for. -advancin a. perforated ahect,1'ef,a signal circuit, an means normal- Al rentra, i.negvl-A by the imperfor'ate portion of sheet and-actuatedfby the presence of while these eleed i'tiatin the closing of sequencel and separaterforations in the sheet and said salvanomg means acting in delayed sequence for izing said circuit.

n an error indicator, the combination with means for advancing a perforated sheet, of a signal circuit, means normal] restrained by tlie imperforate portion o the sheet and o erable initially by the inaccurate presence o a perforation in saidsheet and the advancing means, for energizing said circuit.

7. In an error indicator, the combination with means for advancing the same, of a signal circuit, means normally restrained by the imperforate rtion of' the sheet and operable initially y the inaccurate ener greseno y 4 ofa perforation in said sheet, an subsequently by the advancing means, for energizing tlie said circuit. 8. In an error indicator, .the combination `with means for advancing a perforated sheet, and `means engageable in the rforatioiis for 4verifying; the accuracy of e-same, of a signal circuit, and means normally -restrained by the imperforate portion of the sheet and operable by the presence of an inaccurate perforation, said circuit. V

` 9. In an error indicator, the combination with means for advancing a rforated sheet, and means engageable in t e rforations for verifying the accuracy of, e same, of? a signal circuit, and means controlled by the presence of a perforation for initiating the closing of said circuit, saidlmeans being adapted for engagement by said perforation engaging means. 0 I

10. In an error indicator, the combination with means for advancing a perforated sheet, and means engageable in the perforations for verifying the accuracy of the same, of a signal circuit, and means controlled by the presence of a `erforation for initiating ing of sai circuit, said means being moved to open circuit position when the controlling perforation is engaged by said verify? machine, the combir advancing a perfo' circuit, a plurality ing means.

11. In a verifyin nation with means fo rated sheet, of a signal of successively operated said circuit, means o u n the presence o switches for closingl rable in dependence said circuit, and means said sheet advancing means 090mb by of said circuit.

for completing the closin 12. In a verifyingmaq 'a tion with means foradvanci'ng a' perforated sheet, and means .en `ble ink the perforations forfvlifyn t of a signal circuit, a plurality o vely operated switches for closing said circuit, means operable in dependence ,upon the presence of perforation's y:for."'initiating the closing of said' circuit, 'and 'means operable lby saidfor Ainitially closing k the closperforations for inthe combinal` means operable in dependence upon the presdurin 'sheet advancing means for completing the closing of said'xcircuit, said perforation engaging means functioning ufpon the presence of accurate perforations or interrupting the action of `said initially operating means.

13. lIn a verifier, the combination` with means for advancing a perforated card, and a plurality of plungersl engageable in the perforations of the card for verifying the accuracy of the same, of a signal circuit, meansoperable in dependence upon the presenceof perforations for initating the closi of said circuit, and means operable by said sheet advancing means for completing the closing of said circuit. F 14. In a verifier, 'the combination with means for advancing a perforated card, and a plurality of plungers engageable in the perforations of the card for verifying the accuracy of the same, of a signal circuit,

ence of perforationsA for' initiating they closing of said circuit, 'and means operable by said vcar advancing means andv functioning the latter part of its operation, for comp etinglthe closing of said circuit;

15. In a verier, the combination with means for advancing a perforated card,-'and a plurality of plungersengageable' in the perforations ofthe card for verif ing the accuracy of the same, of a signa circuit, means operable independence upon the presence of perforationsfor initiating the closmeans for advancing a perforatedslheet, and a plurality of plungers engageable 'in .the-

rality of 'contacts'operable in' dependence;

in of said circuit, and means operating in de ayed sequence and controlled by said card advancing means for closin of said circuit.

16.1%11 a verifier', the.combination with means for advancing a perforated card, and

a plurality of plungers engageable in the perforations of the card for veri ing the accuracy of the same, of a signav circuit, means controlled by the presence of perforations in said card for initiating the `closing of said'circuit,`a.nd meansl operating uence ,for completing the clos in delayed' ing of fsaid circuit, the plungers engaging the` accurate perforations functioning to' inf means 'for-` advancin a perforated sheet,

' terrupt. the operation .of said initial'circuit closin means. v

17, n 'a verifier, the combination. with perforations of the sheet for verifyingA the accuracypf the same, of a signal circuit, and a switch in said circuit including a pluuponthe presence of perforations, said plunge'rs functioning to open cr'intacts.

closed by reason of the accurate perforatio'ns.

18. In a. verifier, theA combination4 with means for ,advancingl a perforated sheet,-

and a plurality of plungers engageable in the perforations of the'sheet'for verifying the accuracy of the same, ofA a Signal circuit,

completing the a Switch in Said' Circuit including a plurality of contacts operable in dependence upon the presence of perforations, said plungersv functloning to open those contacts closed by reason of the, accurate f-perforations, and a.

second switch in said circuit operable to complete said signal circuit." Y

19. In .a verifier, the combination with means for advancing a lperforated sheet, and a plurality of plungers engageable in the perforations vof the sheet'forvverifying the.

accura of the same, of a signal circuit, a

switch 1n said circuit including a plurality accuracy of the same, of a signal circuit, a

switch in said circuit including a plurality of contacts operable, in dependence upon the presence of perforations, said plungers functioning to open those contacts closed by reason vof the accurate perforations and a second switch operable in delaye sequence by said sheet advancing means for completing said signal circuit.

1 e1. In a verifier, the combination with means for advancing a perforated sheet, anda plurality of plungers engageable in the perforations 'ofthe sheet for uerifying the accuracy of the same, of a signal circuit, a switch in said circuit including a plurality of contacts,means engageable `in 'said perf'orationsA for closing a. number of contacts equal to the rforations, the contacts closed by the presence ofaccurate perfora tions being opened by fthe engagement of the plungers with the :corresponding contact operating means, anda-,delayed action switch rfor com letinlesaidv signal circuit.

In 'aj fverieu, combination with and a pluralityfof" p ers-'engageablein the4 perforationsaoffotlieuiiieet' fior vtnrifying the accuracy of the same, of a...sxgnal circuit, a switchin said circuitinclu a plurality of contacts," =`engagea le int said perforationsfor ajnnmber 'of cpntactsy -ual to the perforatins, the contacts closed` y the presence-of vaccurate perfor-a1` ff 4 'tions being vopened by.v.,fthe"engagement-of the `phtngers withl the corresponding colef tact operating means,-v and' a sjv'ntch-olxarated4 v'1 tinggfsaid in delayed sequence I' 'for' eoV signalcircuit. 1 'f ,l 23. In ajverienthe combinationjwith means for advancin' a perforated sheet, and a plurality of pungers cngageable; in

ias"- the perforations of the sheet lfor verifying the accuracy of the same, of a si nal circuit, a switch in said circuit including a plurality of contacts, means engageable in said perforations for closing a number of contacts e ual tothe perforations, the contacts close by4 the presence of accurate perforations being opened by the env-agement of the plungers with the corresponding contact operating means, and a second switch operated in delayed sequence by the sheet advancing means for completing said signal circuit.

24. In a verifier, the combination, with means including a carriage for advancing a perforated sheet, and a carriage release key, of a signal circuit includinv a relay for prolonging the ener ization o? said signal circuit, means opera le by the presence of an' inaccurate perforation and b the sheet advancing means for initially -c osing said circuit, and .means operable by said carriage release key for interrupting the circuit to said relay.

25. In a verifier, the combination, with v means including a carriage for advancing a perforated sheet, and a carriage release key, of a signal circuit including, a relay, a subcircuit closed by said relay, a signal ,in said sub-circuit, and av shunt circuit als including said relay and closed by said relay, means operable by the presence of inaccurate perforations and by the sheet advancing means for momentarily closing said first circuit, and a switch in said shunt circuit and opened by operating said carriage y ture.

release key for de-energizing said relay.

26. In a verifier, the combination, with means including a carriage for advancing a perforated sheet, and a carriage release 40 key, of a signal circuit including, a relay, a subcircuit closed by said relay, a signal in said subcircuit, and a shunt circuit also including said relay andv closed by said relay, means-o erable by the presence of in' accurate per orations and by the sheet advancing means for momentarily closing` said first circuit, and a switch in said shunt circuit and opened by o rating said carriage release -key for e-energizing said relay, said first containing resistance elements, as and for the purpose described.

27. In an arrangement of the class described, tlie combination with a'veriier and an error si nal system including, a signal, resistance e ements, and a relay, of a member provided with an inclined platform for saidverifier, and a housing ada ted to contain said signal, resistance e ements' and relay and a window formed therein through which said signal is visible.

' 28. In an error indicator, the combinationV with means for advancing a perforatedl sheet, and means engageable in the perforations for4 verifying the accuracy of the circuit and shunt circuit same, of a signal and adelayed sequence actuating means` therefor o ratin in pendence u n perforations in lthes cet and the sheet a vancing means, the rst of said means being rendered inoperative when said verifying means engages a correct perforation.

In testimony whereofI aix my' signa- DEWEY C. DAUBMEYER. y 

